Improved quaetz-oeushee



A. BUCHANAN.

Quartz C rusher'and Pulverizer.

No. 76,989. Patented April 21, 1868.

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Letters Patent No. 76,989, dated April 21, 1868.

IMPROVED QUARTZ-GRUSHER.

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To ALL WHOM IT MAY CONCERNS Beit known that I, ANDREW BUCHANAN, of Brooklyn, in'thc county of Kings, and in the State of New York, have invented a new and useful 'ImprovcdApparatns for Crushing and.Pulverizing Quartz, &c.; andI do hereby declare that the following is'a full, clear, and exact description thereof, which will enable those skilled in the' art to make and use the same, reference being had to the'accompanying drawing, forming part of the specifics tion, in which drawing- Figure 1 represents a sectional side elevation of this invention.

Figure 2 is a plan or top view of the same,

Similar letters indicate corresponding parts.

This invention relates to an apparatus for crushing and pulverizing quartz and other hard substances, said apparatus being composed of two or three jaws, which are provided with diverging crushing-faces, and com nected together by links or straps, in such 'a manner that said straps or links will sustain the entire strain produced by the opera-tioh of crushing, and that by means of said straps an oscillating motion imparted to one of the jaws is transmitted to the other jaw or jaws, and the material placed between said jaws is crushed and pulverized with ease and facility. The motion of one of the jaws is produced bya crank, which imparts to said jaw'a rising and falling as well as an oscillating motion, in such a manner that it acts simultaneously as a crusher, and as a grinder and pulverizer. The other jaw orjaws are supported by rockers, which are adjust able towards and from the centre of motion, so that the throw of said jaws can be regulated. The weight of the jaws is counterbalanced by suitable springs.

A represents a bed, made of cast iron or any other suitable material. From this bed rises a standard, B, which forms the hearings for a shaft, 0. On this shaft is mounted a crank, D, from the wrist-pin of which is suspended the lever-jaw E. This jaw is connected, by means of straps F, with one or two jaws, G, the crushing faces of which diverge from those of the lever-jaw, so that the material to be crushed'can be fed to them with convenience. v

The straps F are adjustable by sct-screws and slots, or byany other suitable means, so that the distance between the crushing faces can be regulated according to the nature of the work to be accomplished.

The shanks of the jaws G rest upon rockers H, and they are guided by studs I, which are secured in the bed A.- The rockers H are adjustable towards and from the lever-jaws, so that the throw of' the jaws Gr can be regulated.

The weight of said jaws is counterbalanced by springs J, which bear on their shanks, and which may be applied to the studs I, as shown in the drawing, or secured in position in any other suitable manner.

By imparting to the shaft C a revolving motion, a compound risingand falling' and oscillating motion is imparted to the lever-jaw E, and bythe straps Fthe motion is transmitted to the jaws G, said jaws being caused to oscillate on the rockers H. v

As the crushing-faces open, the material to be crushed descends between them, and, as the crushing-faces close up, the material is crushcdi and furthermore, by the peculiar rising and falling motion of the lever-jaw, a grinding eifeotis produced, and the material placed between the jaws is erushedtand pulverized by one operation.

The strain produced by the crushing-operation is sustained entirely by the straps F, the jaws G being detached from the bed, and a'crushing-apparatus is obtained which can be made comparatively light and cheap, and which can be operated with a small expenditure of power.

If desired, the 1ever-jaw canbc omitted,-aud the crank made to connect to one of the jaws G, or the shank of the lever-jaw may be made to extend downward, instead of upwards, i f the position of the shaft G should make it desirable.

What I claim as new, and desire to secure by Letters Patent, is-

1. The connecting-straps F, in combination with the crushing-jaws E G,substa1 1tia11y as and for the urpose described. r

2. The rockers H, in combination with the jaws E G, constructed and operating substantially as and. for

the purpose describeck 3. The balance-sprihgs J, in combination with the, jaws G, constructed and operating subsbanlially as and for the purpose set forth. v

. ANDREWBUGIIANAN.

Witnesses W. HAUEF, GUSTAV BERG. 

